commaai / commaai/opendbc

VW:Skoda Kodiaq RS 2023 EPS low speed turn issue

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bug car volkswagen
Dominant language
Python
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Description

### Describe the bug

The 2023 Kodiaq RS is the performance version of the Kodiaq.
Following the EPS firmware update in 2023, it seems that there are stricter checks on the steering system.
When making low-speed OP (below 6km/h) requested turns, the Kodiaq RS may occur "Steering temporarily unavailable" on OP. Subsequently, the steering assist function locks, LKAS unusable.
To resolve this, the vehicle needs to be turned off and EPS needs to be reset before it can be used again on the road.

Notify @jyoung8607 simultaneously, and thank him for his significant contributions to the community.

### Which car does this affect?

Skoda Kodiaq RS 2023-2022 (Europe import to Taiwan version)

### Provide a route where the issue occurs

0bbe367c98fa1538/2024-02-19--06-44-48/0

### openpilot version

0.9.6 master

### Additional info

1.Lock triggered on a left turn at 15:16
0bbe367c98fa1538/2024-02-23--15-15-49/0

2.Lock triggered on a left turn at 16:27
0bbe367c98fa1538/2024-02-23--16-25-45/1

3.Lock triggered on a right turn at 16:35
0bbe367c98fa1538/2024-02-23--16-32-03/3

4.Lock triggered on a right turn at 20:45
0bbe367c98fa1538/2024-02-23--20-41-41/3

5.Steering wheel lock triggered at low speed at 17:48
0bbe367c98fa1538/2024-02-23--17-31-02/16

Contributor guide

No contributing guide indexed for this repository

Research direction

Start by reviewing the five supplied route recordings from openpilot 0.9.6 master and compare the low-speed left- and right-turn failures for the Skoda Kodiaq RS 2023–2022 Europe-import configuration. Identify the affected EPS or steering integration entry point and define a regression check for the reported lock and recovery behavior; done means the failure no longer requires an EPS reset.

Written by the indexing model from the issue text.

Assessment

Domain
embedded-iot, reverse-engineering
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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